Conveyor Slewing Bearing – Heavy-Duty Rotation Solutions for Industrial Conveyors
Product Overview
As a professional slewing bearing manufacturer, we understand that the efficiency of a stacking or reclaiming conveyor relies heavily on its "joint." Our Conveyor Slewing Bearing (also known as a slew ring or turntable bearing) is engineered to withstand the rigorous demands of bulk material handling.
Unlike standard bearings, our conveyor-specific slew rings are designed to support massive axial and radial loads simultaneously while handling high tilting moments generated by long conveyor booms. Whether for ship-to-shore cranes, stacker-reclaimers, or tripper conveyors, our bearings ensure smooth, precise rotation in dusty, high-vibration environments.
Performance & Quality Highlights
We utilize advanced heat treatment and precision machining to ensure our bearings outlast standard market options.
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Robust Load Capacity: Designed to handle complex combined loads (axial, radial, and moment loads) typical in heavy industrial conveyor systems.
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Superior Sealing: Equipped with multi-lip rubber seals (often with labyrinth gaps) to prevent dust ingress and grease leakage—critical for mining and port environments.
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Gear Precision: Optional internal or external gearing with induction-hardened teeth ensures high torque transmission and resistance to wear from the drive pinion.
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Material Integrity: We use high-strength alloy steels (e.g., 42CrMo, 50Mn) with controlled quenching to achieve a surface hardness of 55-62 HRC, significantly extending service life.
Technical Specifications
Below are the common specifications for our conveyor slewing bearings. We specialize in both Single-Row Four-Point Contact Ball types (for high speed and lighter loads) and Three-Row Roller types (for extreme heavy-duty applications).
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Parameter
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Specification Details
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Product Name
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Conveyor Slewing Bearing / Slew Ring
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Structure Types
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Single-row ball, Double-row ball, Three-row roller
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Material
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42CrMo, 50Mn, C45, or Custom Alloy Steel
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Hardness
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Raceway Hardness: 55-62 HRC; Gear Hardness: 50-55 HRC
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Gear Type
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External Gear, Internal Gear, or Gearless
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Sealing
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Heavy-duty rubber seals with labyrinth protection
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Lubrication
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Grease lubrication with standard fittings (nipples)
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Precision Grade
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Rotation accuracy up to P6 / P5 standards
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Diameter Range
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OD from 200mm to 5000mm+ (Custom manufacturing available)
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Certifications & Standards
Our manufacturing processes adhere to strict international quality management systems. We ensure full traceability from raw material forging to final assembly.
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ISO 9001: Certified Quality Management System.
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DIN / ISO Standards: Manufactured in compliance with DIN 69 120 or ISO 281 calculation methods.
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Material Certificates: EN 10204 3.1 Material Certificates provided for all critical batches.
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CE Marking: Compliant with relevant European safety directives.
Our Services
We are not just a factory; we are your engineering partner.
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Custom Design: We can design bearings based on your specific CAD drawings or load case data.
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OEM/ODM: Full support for private labeling and custom packaging.
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Technical Support: Assistance with mounting, mating gear design, and maintenance schedules.
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Fast Delivery: Optimized production lines to ensure on-time delivery for critical project timelines.
Applications
Our slewing bearings are the core component for the rotation mechanisms in:
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Stacker & Reclaimer: Used in port terminals and mining stockyards.
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Ship-to-Shore (STS) Cranes: For precise container handling.
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Bucket Wheel Excavators: In large-scale surface mining.
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Radial Stacking Conveyors: For aggregate and grain handling.
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Wind Turbines: Pitch and Yaw mechanisms (related heavy-duty tech).
Frequently Asked Questions (FAQ)
Q1: What is the difference between a single-row and three-row roller slewing bearing for conveyors?
A1: Single-row ball bearings are generally used for medium loads and higher rotational speeds. Three-row roller bearings are designed for extreme heavy-duty applications (like large stacker-reclaimers) where high axial and radial loads are present simultaneously.
Q2: Do you provide the mating gears/pinions?
A2: While we specialize in the slewing ring, we can recommend specifications for the mating pinion to ensure proper backlash and meshing, or connect you with our trusted gearbox partners.
Q3: How do you package such large bearings for shipping?
A3: We use heavy-duty wooden crates with reinforced steel skids. The bearing is wrapped in waterproof plastic and secured with steel bands to prevent movement during ocean freight.
Q4: Can I get a sample for testing?
A4: For standard small-to-medium sizes, samples are available. For large industrial bearings, we typically proceed with a pilot order after design confirmation.
